Home / 76,938.70-115,408.05-62,941.90

Finding the Fourth Proportional to 76,938.70, 115,408.05 and 62,941.90

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Solution

The fourth proportional to 76,938.70, 115,408.05 and 62,941.90 is: 94,412.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,938.70 : 115,408.05 = 62,941.90 : x
  2. Step 2: Convert to fraction form
    76,938.70/115,408.05 = 62,941.90/x
  3. Step 3: Cross multiply
    76,938.70x = 115,408.05 × 62,941.90
  4. Step 4: Simplify right side
    76,938.70x = 7,264,001,942.30
  5. Step 5: Solve for x
    x = 7,264,001,942.30/76,938.70
  6. Step 6: Final answer
    x = 94,412.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.